'zero contract '

Today I went to Chris Stein ( of Blondie fame  )'s exhibition of photos at Somerset House and one of the 'curators ' mentioned she has to work everyday until the end of the exhibition in March 2015 - working on a 'zero contract '. She also mentioned that there was a party that evening for all the staff but it wouldn't really be much of a party since it was at her place of work and she's still has to make sure there's no damage to the photos that have been bought.